<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
   <script src="./jquery.min.js"></script>
</head>
<body>
    <button>请求</button>
</body>
</html>

<script>
    let xhr = (url) => {
        return new Promise((resolve,reject) => {
            $.ajax({
                url,
                success(res){
                    resolve(res)
                },
                error(err){
                    reject(err)
                }
            })
        })
    }
 $('button').click( async function() {
    let res1 = await xhr('http://localhost:3000/play/category');
    let res2 = await xhr('http://localhost:3000/play/hot');
    console.log(res1,res2);
 })
</script>